Found the answer, thanks to Seppuldura, and it worked. Thought I would share as it may help someone else someday.
"Either start the windows media player or google and download a programm called srcdsfpsboost.exe
May sound strange but here's the quote from the FAQ:
http://forums.srcds.com/viewtopic/1094
3. To change the Windows Kernel Timer Resolution (pingboost a server) all you need to do is run Windows Media Player. It does not need a file open, it just has be running in the background, if you do not do this, your servers fps will be limited to around 64 frames a second."